Refactor app component unit tests
Refactor app component unit tests

DavideViolante/Angular-Full-Stack,DavideViolante/Angular-Full-Stack,DavideViolante/Angular-Full-Stack,DavideViolante/Angular2-Express-Mongoose,DavideViolante/Angular2-Express-Mongoose,DavideViolante/Angular2-Express-Mongoose,DavideViolante/Angular-Full-Stack